Make buttons unpress when the cursor leaves the button rect.

Implement this functionality by adding global cursor tracking.
It's currently only possible for one GWidget per GWindow to track the cursor.

3 files changed, 18 insertions, 0 deletions

diff --git a/WindowServer/WSWindow.cpp b/WindowServer/WSWindow.cpp
index ff2432def0..81a24ef20e 100644
--- a/WindowServer/WSWindow.cpp
+++ b/WindowServer/WSWindow.cpp
@@ -123,3 +123,9 @@ void WSWindow::on_message(WSMessage& message)
         m_process.gui_events().append(move(gui_event));
     }
 }
+
+void WSWindow::set_global_cursor_tracking_enabled(bool enabled)
+{
+    dbgprintf("WSWindow{%p} global_cursor_tracking <- %u\n", enabled);
+    m_global_cursor_tracking_enabled = enabled;
+}
diff --git a/WindowServer/WSWindow.h b/WindowServer/WSWindow.h
index e91845f02b..12a30da4b7 100644
--- a/WindowServer/WSWindow.h
+++ b/WindowServer/WSWindow.h
@@ -42,6 +42,9 @@ public:
 
     pid_t pid() const { return m_pid; }
 
+    void set_global_cursor_tracking_enabled(bool);
+    bool global_cursor_tracking() const { return m_global_cursor_tracking_enabled; }
+
     // For InlineLinkedList.
     // FIXME: Maybe make a ListHashSet and then WSWindowManager can just use that.
     WSWindow* m_next { nullptr };
@@ -52,6 +55,7 @@ private:
     String m_title;
     Rect m_rect;
     bool m_is_being_dragged { false };
+    bool m_global_cursor_tracking_enabled { false };
 
     RetainPtr<GraphicsBitmap> m_backing;
     Process& m_process;
diff --git a/WindowServer/WSWindowManager.cpp b/WindowServer/WSWindowManager.cpp
index bd9a69236e..4679b9afe9 100644
--- a/WindowServer/WSWindowManager.cpp
+++ b/WindowServer/WSWindowManager.cpp
@@ -288,6 +288,14 @@ void WSWindowManager::process_mouse_event(WSMouseEvent& event)
     }
 
     for (auto* window = m_windows_in_order.tail(); window; window = window->prev()) {
+        if (!window->global_cursor_tracking())
+            continue;
+        Point position { event.x() - window->rect().x(), event.y() - window->rect().y() };
+        auto local_event = make<WSMouseEvent>(event.type(), position, event.buttons(), event.button());
+        window->on_message(*local_event);
+    }
+
+    for (auto* window = m_windows_in_order.tail(); window; window = window->prev()) {
         if (title_bar_rect(window->rect()).contains(event.position())) {
             if (event.type() == WSMessage::MouseDown) {
                 move_to_front(*window);